Biology STAAR Review Category #1-#4

Front

What is the basic unit of life?

Back

The cell is the basic unit of life.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.

Front

Define homeostasis.

Back

Homeostasis is the ability of an organism to maintain a stable internal environment despite changes in external conditions.

Front

What is the function of DNA?

Back

DNA carries genetic information necessary for the growth, development, and reproduction of organisms.

Front

What are the main components of a cell?

Back

The main components of a cell include the cell membrane, cytoplasm, and nucleus.

Front

What is the role of enzymes in biological processes?

Back

Enzymes act as catalysts to speed up chemical reactions in the body.

Front

What is natural selection?

Back

Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is the difference between prokaryotic and eukaryotic cells?

Back

Prokaryotic cells do not have a nucleus or membrane-bound organelles, while eukaryotic cells do.

Front

What is an ecosystem?

Back

An ecosystem is a community of living organisms interacting with their physical environment.

Front

Define biodiversity.

Back

Biodiversity refers to the variety of life in a particular habitat or ecosystem.